It won't happen in a consumer-grade radio due to legalities, so there won't even be provision to enter keys even IF you could get them. Even software-based reception is a near absolute write-off. You'd have to intercept the 128 or 256 bit encrypted key & decrypt it before the next key update. When NS moves to the new system, it is likely that keys can be delivered over the air...and can be done at a time interval of their choosing....which will be certainly done at a time interval vastly shorter than the large time it would likely take to decrypt a key.